Masters Theses

Abstract

"This project applied adaptive digital beamforming to an indoor setting of multiple transmitting devices at the same frequency. A carrier frequency of 2.4 GHz was chosen to correspond with Bluetooth specifications, as it was desired to theorize multiple Bluetooth devices transmitting on an office desktop. Background material for Wiener filter theory and the Least-Mean-Square algorithm were discussed with their relevance to digital beamforming. Linear, solid planar, and hollow planar antenna arrays were examined and the resultant beamformer outputs were compared. The linear array contained 8 antenna elements, while the planar configurations consisted of an 8-by-8 array of elements. An antenna array of roughly 25 cm2 was chosen to represent the size of a standard computer monitor, on which the array was theoretically mounted. Results from preliminary testing show that interfering signals can be attenuated at levels up to 59 dB for the linear and solid planar antenna array patterns. The hollow planar array was not able to place a null directly in the direction of the interfering signal; thus, it could attenuate an interfering signal only by 27 dB. Further testing would show whether or not this was an inherent limitation based on the spacing of array elements"--Abstract, page iii.

Advisor(s)

Kosbar, Kurt Louis

Committee Member(s)

Cox, Norman R.
Hilgers, Michael Gene

Department(s)

Electrical and Computer Engineering

Degree Name

M.S. in Electrical Engineering

Publisher

University of Missouri--Rolla

Publication Date

Spring 2001

Pagination

vii, 35 pages

Note about bibliography

Includes bibliographical references (pages 33-34).

Rights

© 2001 Timothy Nicholas Koehler, All rights reserved.

Document Type

Thesis - Restricted Access

File Type

text

Language

English

Thesis Number

T 7879

Print OCLC #

46861285

Link to Catalog Record

Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.

http://laurel.lso.missouri.edu/record=b4622530~S5

Share My Thesis If you are the author of this work and would like to grant permission to make it openly accessible to all, please click the button above.

Share

 
COinS